Abstract
Building up on previous work we propose a Dark Matter (DM) model with gauged matter parity and dynamical gauge coupling unification, driven by the same physics responsible for scotogenic neutrino mass generation. Our construction is based on the extended gauge group SU(3)c ⊗ SU(3)L ⊗ U(1)X ⊗ U(1)N, whose spontaneous breaking leaves a residual conserved matter parity, MP, stabilizing the DM particle candidates of the model. The key role is played by Majorana SU(3)L-octet leptons, allowing the successful gauge coupling unification and a one-loop scotogenic neutrino mass generation. Theoretical consistency allows for a plethora of new particles at the ≲ mathcal{O} (10) TeV scale, hence accessible to future collider and low-energy experiments.
Highlights
Within a simple U(1)-extension of the gauge symmetry, allowing the implementation of a conserved matter parity
Building up on previous work we propose a Dark Matter (DM) model with gauged matter parity and dynamical gauge coupling unification, driven by the same physics responsible for scotogenic neutrino mass generation
As a follow-up of our previous work we have proposed a scotogenic scheme where dark matter stability is ensured by a gauged matter parity symmetry, eq (1.1)
Summary
We study a 3-3-1-1 model based on the SU(3)c ⊗ SU(3)L ⊗ U(1)X ⊗ U(1)N gauge symmetry introduced in [7] and the implementation of a conserved matter parity according to eq (1.1). [7], our present setup includes three Majorana octets ΩaL (a = 1, 2, 3) They are crucial for achieving a successful gauge coupling unification scenario, as well as for providing the tiny masses of the light active neutrinos via a one-loop scotogenic mechanism. The latter is possible thanks to the inclusion of a scalar singlet σ This electrically neutral field has a nontrivial charge under the preserved remnant matter-parity symmetry, providing a viable scalar WIMP. Our model includes three right-handed neutrinos with nonstandard U(1)N charges, which have been introduced in [9] to ensure an anomaly free gauge symmetry. These fields do not take part in the neutrino mass generation mechanism, and they do not mix with the other neutral fermions of the model.
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